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Ultrasonic doppler measurement of blood flow velocities by array transducers

  • US 5,606,972 A
  • Filed: 08/10/1995
  • Issued: 03/04/1997
  • Est. Priority Date: 08/10/1995
  • Status: Expired due to Fees
First Claim
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1. In an ultrasonic diagnostic imaging system including Doppler apparatus for making ultrasonic measurements of flow conditions at a sample volume within the body comprising:

  • an array transducer having multiple elements comprising an active aperture of a given dimension;

    a receiver coupled to said array transducer for receiving echo signals from elements of the transducer aperture;

    a Doppler processor coupled to said receiver for Doppler processing of echo signals received from said sample volume to develop estimates of flow velocity at said sample volume;

    a peak velocity detector coupled to said Doppler processor for identifying a peak flow velocity from a number of said flow velocity estimates, including means for identifying said peak flow velocity as a function of said dimension of said active aperture of said transducer array and the location of said sample volume with respect to said active aperture; and

    a display for displaying said identified peak flow velocity.

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